摘要:
A copper base alloy for terminals that is superior in all aspects of tensile strength, spring limits, conductivity, and stress relaxation characteristics can be produced by a process repeating the cycles consisting of hot-rolling, cold-rolling and annealing, in which process an ingot is prepared by melting and casting an alloy containing 1.0-3.0 wt % Ni, 0.02-0.15 wt % P. 0.5-2.0 wt. % Sn and, as an optional component, 0.01-2.0 wt % Zn, with the balance being Cu and incidental impurities, and with the ratio of weight percentages of Ni to P being within the range of 10-50%.
摘要:
A copper base alloy for terminals that is of the Cu-Ni-Sn-P or Cu-Ni-Sn-P-Zn system and that has a tensile strength of at least 50 kgf/mm.sup.2, a spring limit of at least 40 kgf/mm.sup.2, a stress relaxation of not more than 10% and a conductivity of at least 30% IACS is provided. Terminals the spring portion or the entire part of which is produced from that copper base alloy, having an insertion/extraction force of 0.2-3 kgf and a resistance of not more than 3 m.OMEGA. at low voltage and current as initial performance, with the added characteristic that the terminals will experience not more than 20% stress relaxation are also provided. The alloy is superior to the conventional bronze, phosphor bronze and Cu-Sn-Fe-P alloys for terminals in terms of tensile strength, spring limits, stress relaxation characteristic and conductivity and, hence, the terminals manufactured from those alloys have higher performance and reliability than the terminals made of the conventional copper base alloys for terminals.
摘要翻译:用于Cu-Ni-Sn-P或Cu-Ni-Sn-P-Zn系的端子用铜基合金,其拉伸强度为至少50kgf / mm 2,弹簧极限为至少40kgf / mm2,应力松弛不大于10%,电导率至少为30%IACS。 端子弹簧部分或其整个部分由该铜基合金制成,其具有0.2-3kgf的插入/拉伸力和在低电压和电流下不超过3m欧姆电阻作为初始性能,其中 还提供了终端将经历不超过20%的应力松弛的特征。 在拉伸强度,弹簧极限,应力松弛特性和导电性方面,该合金优于常规的青铜,磷青铜和Cu-Sn-Fe-P合金,因此,由这些合金制造的端子具有更高的性能和 可靠性高于由常规铜基合金端子制成的端子。
摘要:
Wear resistant copper or a wear resistant copper base alloy having formed on the outermost surface thereof an oxide layer having a thickness of 10-1000 nm and a layer of an intermetallic compound primarily comprising Cu—Sn having a thickness of 0.1-10 &mgr;m under the oxide film layer is provided; a method of preparing the above-described wear resistant copper or copper base alloy by coating base material copper or a copper base alloy with Sn, preferably performing reflow treatment and then conducting heat treatment is provided; and an electrical part comprising the above-described wear resistant copper or copper base alloy is provided. A terminal made of the alloy according to the present invention which has an appropriate oxide film layer by performing heat treatment can greatly decrease a terminal-insertion force compared with that made of an ordinary copper base alloy which is not subjected to the heat treatment. The wear resistant copper or copper base alloy according to the present invention has a large surface hardness, an excellent slipping property, small contact resistance, an excellent electrical characteristic, as well as the small terminal-insertion force so that it can advantageously be used in an electrical part such as a connector or the like for use in an automobile, a charging socket or the like for use in an electric automobile.
摘要:
A copper alloy for terminals of the Cu—Ni—Sn—P system or Cu—Ni—Sn—P—Zn system and that has a tensile strength of at least 500 N/mm2, a spring limit of at least 400 N/mm2, a stress relaxation of no more than 10%, a conductivity of at least 30% IACS and a bending workability in terms of a R/t ratio of no more than 2. The spring portion or the entire part of such terminals are produced from the copper alloy, and have an initial insertion/extraction force of 1.5 N to 30 N and a resistance of no more than 3 m&OHgr; at low voltage and low current as initial performance. The terminals experience not more than 20% stress relaxation. The alloy is superior to the conventional bronze, phosphor bronze and Cu—Sn—Fe—P alloys for terminals in terms of tensile strength, spring limit, stress relaxation characteristics and conductivity and, hence, the terminals manufactured from such alloys have higher performance and reliability than terminals made of the conventional copper alloys for terminals.
摘要:
A process for the production of copper or a copper base alloy that provides a surface having improved characteristics suitable for the production of a connector or a charging-socket of an electric automobile by having a decreased coefficient of friction on the surface and improved resistance to abrasion. The process comprises coating copper or a copper alloy with Sn, followed by heat treating the resulting Sn-plated copper or copper base in an atmosphere having an oxygen content of no more than 5%, thereby forming on an outermost surface thereof an oxide film and beneath the surface a layer of an intermetallic compound mainly comprising Cu—Sn.
摘要:
The invention provides a coated Cu alloy and a process for producing the coated Cu alloy having a surface which has a low coefficient of friction and a high resistance to abrasion and is suitable for fabricating connectors, charging-sockets of electric automobiles etc. The coated Cu alloy is produced by coating the surface of a copper alloy with Sn and heat treating the coated Cu alloy at a temperature in the range of 100-450.degree. C. for 0.5-24 hours. The Cu alloy which is coated with Sn consists of 1-41 wt % Zn with the balance being Cu and incidental impurities. By using the coated Cu alloy, the force of insertion, resistance to abrasion and resistance to corrosion of connectors can be significantly improved.
摘要:
The invention provides a process for producing a coated Cu alloy having a surface which has a low coefficient of friction and a high resistance to abrasion and is suitable for fabricating connectors, charging-sockets of electric automobiles etc. The coated Cu alloy is produced by coating the surface of a copper alloy with Sn and heat treating the coated Cu alloy at a temperature in the range of 100-450° C. for 0.5-24 hours. The Cu alloy which is coated with Sn consists of 1-41 wt % Zn with the balance being Cu and incidental impurities. By using the coated Cu alloy, the force of insertion, resistance to abrasion and resistance to corrosion of connectors can be significantly improved.
摘要:
A rechargeable battery type electric power tool is widely used for a construction work or a horticultural work. A battery of the electric power tool can also be used as a power source of an electric apparatus. Because of this construction, there is provided the electric apparatus that has a function equivalent to that of an AC power source type apparatus.